## Graphing Motion

- Motion occurs when there is a change in position of an object with respect to a reference starting point.
- The final position of an object is determined by measuring the change in position and direction of the segments along a trip. The following terms are used to describe and determine motion:

**Position**- Position is the location of an object.
- An object changes position if it moves relative to a
**reference point**(starting point). - The change in position is determined by the distance and direction of an object’s change in position from the starting point (
**displacement**).

- Direction is the line, or path along which something is moving, pointing, or aiming.
- Direction is measured using a reference point with terms such as up, down, left, right, forward, backward, toward, away from, north, south, east, or west.

**Speed**- The
**slope**(slant or angle) - When the slope of the line is steep, the speed is faster than if the slope were flatter.
- When the slope of the line is flatter, the speed is slower.
- When the slope of the line is horizontal to the x-axis, the speed is zero (the object is not moving).

**Position-Time Graphs**- A graph used to show a change in an object’s location over time.
- For this type of graph, time (the independent variable) is plotted on the x-axis and the position (the dependent variable) is plotted on the y-axis.

## Different types of graphs representing changes in speed and direction.

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